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CVE-2026-47878

Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist

HIGH
7.3
CVSS Score
Published: August 27, 2026 at 05:20 AM UTC
Updated: September 10, 2026 at 04:18 PM UTC
2 products affected across 2 vendorsSpring BatchSpring Batch

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Severity
HIGH7.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

DefaultExecutionContextSerializer, used by default in Spring Batch's JDBC job repository, passes Base64-decoded bytes directly to ObjectInputStream.readObject() without an ObjectInputFilter that restricts types to a trusted class allowlist. Spring Batch 6.0.0 - 6.0.4 Spring Batch 5.2.6 and earlier

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Batch· Broadcom
95%
5.0.0 ≤ v < 5.2.76.0.0 ≤ v < 6.0.4.1
Affected range stops below 5.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.4.1, so it looks safe — our inference, not a vendor statement
Spring Batch· Spring
60%
v ≤ 5.2.66.0.0 ≤ v ≤ 6.0.46.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://spring.io/security/cve-2026-47878

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-502

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